skia2/docs/examples/Surface_MakeRasterN32Premul.cpp
Hal Canary d88c2e8e09 Docs: rename examples files to match names
Change-Id: I9a6b2780cfdd91cdd16d5a08eb9ba1214492cb7e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201982
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2019-03-19 18:49:22 +00:00

27 lines
1005 B
C++

// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "fiddle/examples.h"
// HASH=b932a2bd68455fb0af2e7a1ed19e36b3
REG_FIDDLE(Surface_MakeRasterN32Premul, 256, 256, true, 0) {
void draw(SkCanvas* ) {
sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(3, 3));
SkCanvas* canvas = surface->getCanvas();
canvas->clear(SK_ColorWHITE);
SkPixmap pixmap;
if (surface->peekPixels(&pixmap)) {
const uint32_t* colorPtr = pixmap.addr32();
SkPMColor pmWhite = colorPtr[0];
SkPaint paint;
canvas->drawPoint(1, 1, paint);
canvas->flush(); // ensure that point was drawn
for (int y = 0; y < surface->height(); ++y) {
for (int x = 0; x < surface->width(); ++x) {
SkDebugf("%c", colorPtr[x] == pmWhite ? '-' : 'x');
}
colorPtr += surface->width();
SkDebugf("\n");
}
}
}
} // END FIDDLE